# Planet Families 2 > Build and simulate your own solar systems with realistic gravity physics. (iPhone/iPad app by Space Science Institute.) - Source: https://appshunter.io/ios/app/planet-families-2/id1504082917 (this page in markdown: same URL + `.md`) - Developer: [Space Science Institute](https://appshunter.io/developer/672447465) - Category: Games, Education, Casual, Simulation - Price: Free - Rating: 4.90/5 from 9 App Store ratings · 3 written reviews indexed - Age rating: 4+ - Requires: iOS 10.0 · 73 MB - Languages: American English - Released: 2020-03-24 - Data updated: 2026-06-10 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/planet-families-2/id1504082917/reviews.md ## What is Planet Families 2? Drag and drop planets and stars to make your own solar system. The physics engine will calculate how gravity between all of the asteroids, planets, and stars affect one another while they move through space. Can you make a stable solar system? How about a stable solar system with a binary star? Funding This material is based upon work supported by the National Science Foundation under Grant Nos. ESI-0125762, DRL-1010844, and DRL-1421427. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation. This material is based upon work supported by NASA under award No. NNX16AE30A. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Aeronautics and Space Administration. ## Key features - Create custom solar systems - Realistic gravity simulation - Drag and drop interface - Build stable celestial arrangements - Explore binary star systems ## Recent user reviews (3 of 3) All indexed reviews: https://appshunter.io/ios/app/planet-families-2/id1504082917/reviews.md ### 4/5 — Yeah no black holes *2023-11-01* Add some old thing called black hole NASA discovered a lot of black holes so add black holes and #2 that’s all I want#3 thanks ### 5/5 — Fun *2021-05-12, version 2.1* Got assigned this do to in school and was very fun so I downloaded the app 10/10 simple and easy ### 5/5 — I love this app *2020-07-17, version 2.1* Is there a way to add a habitable zone to the orbits ? If not okay. I still love the app ## Frequently asked questions about Planet Families 2 ### What is Planet Families 2? Planet Families 2 is a free educational game that allows users to create and simulate their own solar systems. It uses a physics engine to model gravitational interactions between celestial bodies. ### How do you play Planet Families 2? You play by dragging and dropping planets, stars, and asteroids into a space environment. The app's physics engine then calculates how their gravity affects their movement and stability. ### Can I create a solar system with two stars in Planet Families 2? Yes, the game challenges you to create stable solar systems, including those with a binary star system. The physics engine will simulate the complex gravitational interactions involved. ### What devices support Planet Families 2? Planet Families 2 is available on iPhone, iPad, and iPod touch devices. It is designed for iOS users interested in space simulation. ### Is Planet Families 2 free to download? Yes, Planet Families 2 is completely free to download and play. There are no in-app purchases or subscription fees required. ### What is the age rating for Planet Families 2? Planet Families 2 has an age rating of 4+. This makes it suitable for young children and families interested in learning about space and physics. ### How often is Planet Families 2 updated? The latest version, 2.1, was released on April 23, 2020. While the last update was in 2020, the app's core functionality remains robust for its intended purpose. ### Does Planet Families 2 have ads? The provided data does not indicate the presence of advertisements in Planet Families 2. It is listed as a free application without any mention of ads. ## Version history (last 2 releases) ### 2.1 — 2020-04-23 - Increased touch radius for dragging planets - Added proper credits ### 2.0 — 2020-03-24 No release notes. ## Apps similar to Planet Families 2 | App | Rating | Price | Category | | --- | --- | --- | --- | | [Solar Madness!](https://appshunter.io/ios/app/solar-madness/id1142721708) | 5.0 (1) | Free | Games | | [Pluto is Love - Space Adventure Story](https://appshunter.io/ios/app/pluto-is-love-space-adventure-story/id1032632630) | 2.8 (5) | Free | Games | | [Paddle Planet](https://appshunter.io/ios/app/paddle-planet/id1299198618) | 3.4 (9) | Free | Games | | [SpaceFlex Lander](https://appshunter.io/ios/app/spaceflex-lander/id1563800773) | 3.7 (3) | Free | Games | | [Bounce Planets](https://appshunter.io/ios/app/bounce-planets/id320954115) | 3.0 (1) | Free | Games | | [Nebula .IO - Gar Planets Battle](https://appshunter.io/ios/app/nebula-io-gar-planets-battle/id1086471115) | 4.5 (1,062) | Free | Games | ## More apps by Space Science Institute - [Star Maze: The Great Escape](https://appshunter.io/ios/app/star-maze-the-great-escape/id672447462) - [Rubble!](https://appshunter.io/ios/app/rubble/id685406175) - [Planet Families](https://appshunter.io/ios/app/planet-families/id836738110) - [Solar Vision](https://appshunter.io/ios/app/solar-vision/id1241442756) - [Matter Sorter](https://appshunter.io/ios/app/matter-sorter/id1508378005) All apps by Space Science Institute: https://appshunter.io/developer/672447465 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*